Moria is great. Found the defender weapon around DL25 and the ring of speed around DL40. Spent longer than needed at 2450' trying to find an amulet of the magi so that I could switch to the holy avenger weapon while keeping free action, but it never showed up. Beat the Balrog using 5 out of 13 invulnerability potions so I could have won much quicker. Played on angband.live (Note: you gain 40 levels after retiring, I was level 34)